Failure thresholds of high burnup BWR fuel rods under RIA conditions

Nakamura, Takehiko*; Fuketa, Toyoshi; Sugiyama, Tomoyuki; Sasajima, Hideo

Journal of Nuclear Science and Technology, 41(1), p.37 - 43, 2004/01

https://doi.org/10.3327/jnst.41.37

Transient deformation of high burnup BWR fuel rods was measured and failure limit was examined under simulated RIA conditions. Brittle cladding failure occurred at a small strain of about 0.4% during an early phase of the pulse irradiation tests at the NSRR. Strain rates were in an order of tens %/s at the time of the failure. Comparison of the results with thermal expansion of pellets suggested that the deformation was caused by thermal expansion of the pellets. In other words, the influence of fission gases in the pellets was small in the early phase of the deformation. Separate effect tests were conducted to examine influence of the cladding temperature on the failure behavior of cladding. Influence of the pulse width on the failure threshold was discussed in terms of the strain rate, magnitude of the deformation and temperature of the cladding for high burnup BWR fuel rods under RIA conditions.

Fuel behavior in simulated RIA under high pressure and temperature coolant condition

Tanzawa, Sadamitsu; ;

Journal of Nuclear Science and Technology, 30(4), p.281 - 290, 1993/04

https://doi.org/10.3327/jnst.30.281

no abstracts in English

Annual progress report on the NSRR experiments, 21; April 1989 through March 1990

;

JAERI-M 92-072, 194 Pages, 1992/05

JAERI-M-92-072.pdf:6.48MB

no abstracts in English

Failure behavior of stainless steel clad fuel rod under simulated reactivity initiated accident condition

;

Journal of Nuclear Science and Technology, 23(12), p.1051 - 1063, 1986/12

https://doi.org/10.3327/jnst.23.1051

no abstracts in English

Fabrication and Performance Test of NSRR High-Temperatur High-Pressure Loop

; ;

JAERI-M 83-039, 118 Pages, 1983/03

JAERI-M-83-039.pdf:3.07MB

no abstracts in English

Effects of Pellet on the Fuel Failure Behavior under a RIA Condition; Pellet Shape Parameter Tests in the NSRR Experiments

*; ; ; ; *

JAERI-M 9140, 40 Pages, 1980/10

JAERI-M-9140.pdf:2.0MB

no abstracts in English